TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 1235 of 1275

TM 9-2350-311-20-1

WARNING

On some vehicles that have the MASTER switch in negative battery cable, sparking may occur if VTM case

touches vehicle while MASTER switch is off and STE/lCE-R power is on. This sparking in presence of fuel

or vapors presents potential hazard. Avoid hazard by doing all testing with vehicle MASTER switch on.

Excessive pressure can damage transducer. Pressure being

measured should not exceed 1000 psig (68.9 kg/sq cm)

Refer to TM 9-4910-571-12&P for

offset fault isolation.

Go to step 3, Figure 3, sheet 33.

Figure 3, Sheet 32 of 36

I-58

CAUTION

NOTE

During offset test, systme must be

depressurized.